Brazilian

Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone Sale price¥19,800

Brazilian Paraiba Tourmaline 0.341ct loose stone (CuO:1.81%, MnO:1.96%) Nakahokan analysis report Sale price¥598,000

Unheated Brazilian Paraiba Tourmaline 0.081ct loose stone (CuO: 2.1%, MnO: 2.3%) Sale price¥98,000

Unheated Brazilian Paraiba Tourmaline 0.088ct loose stone (CuO: 1.9%, MnO: 2.3%) Sale price¥98,000

Unheated Brazilian Paraiba Tourmaline 0.059ct loose stone (CuO: 1.4%, MnO: 2.7%) Sale price¥63,800

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 2.0%, MnO: 2.4%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.066ct loose stone (CuO: 1.5%, MnO: 2.2%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone (CuO: 1.8%, MnO: 2.4%) Sale price¥75,800

Unheated Brazilian Paraiba Tourmaline 0.061ct loose stone (CuO: 1.7%, MnO: 2.2%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.055ct loose stone (CuO: 1.9%, MnO: 2.2%) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.066ct loose stone (CuO: 1.7%, MnO: 2.4%) Sale price¥79,800

Unheated Brazilian Paraiba Tourmaline 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.062ct loose stone (CuO: 1.7%, MnO: 2.5%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.058ct loose stone (CuO: 2.0%, MnO: 2.2%) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.056ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.057ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

Brazilian Quartz in Quartz 15.373ct Loose Stone Sale price¥24,800

Paraiba tourmaline from Brazil 0.057ct loose Sale price¥22,800

Paraiba tourmaline from Brazil 0.061ct loose Sale price¥25,800

Paraiba tourmaline from Brazil 0.049ct loose Sale price¥19,800

Paraiba tourmaline from Brazil 0.018ct loose Sale price¥14,800

Paraiba tourmaline from Brazil 0.023ct loose Sale price¥19,800

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥25,800

[Cat cut] Brazilian dendritic agate 0.774ct loose stone Sale price¥8,800

[Cat cut] Brazilian dendritic agate 0.744ct loose stone Sale price¥8,800

Brazilian bicolor tourmaline 2.153ct loose stone Sale price¥29,800

Brazilian Flower Quartz 7.064ct Loose Stone Sale price¥17,800

Brazilian Paraiba Tourmaline 0.177ct loose stone (CuO: 2.1%, MnO: 1.3%) Sale price¥45,800

Unheated Brazilian Paraiba Tourmaline 0.046ct loose stone (CuO: 1.7%, MnO: 2.5%) Sale price¥98,000

Unheated Brazilian Paraiba Tourmaline 0.043ct loose stone (CuO: 1.4%, MnO: 4.0%) Sale price¥88,800

Unheated Brazilian Paraiba Tourmaline 0.038ct loose stone Sale price¥59,800

Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.110ct Loose Stone AIGS Sale price¥258,000

Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone Sale price¥22,800

Brazilian Indigolite Tourmaline 1.247ct Loose Stone, Japan-Germany Exchange Sale price¥98,000

Brazilian Romanesite in Amethyst 7.083ct Loose Stone Sale price¥18,800

Brazilian Romanesite in Quartz 2.914ct loose stone Sale price¥9,800

Brazilian Flower Quartz 4.666ct Loose Stone Sale price¥12,800

Brazilian Flower Quartz 6.928ct Loose Stone Sale price¥17,800

Brazilian Flower Quartz 6.004ct Loose Stone Sale price¥15,800

Brazilian Flower Quartz 7.144ct Loose Stone Sale price¥17,800

Brazilian Flower Quartz 6.501ct Loose Stone Sale price¥16,800

Brazilian Flower Quartz 6.582ct Loose Stone Sale price¥16,800

Brazilian Alexandrite 0.066ct loose stone Sale price¥12,800

Brazilian Aquamarine 0.874ct Loose Stone (Phantom Cut) Sale price¥8,800

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available} Sale price¥1,580

Brazilian Paraiba Tourmaline 0.405ct loose stone (CuO2.7% CuO2.2%) GIA Sale price¥198,000

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.